Add linker_test.dart into the summary test suite.

pkg/analyzer/test/src/summary/test_all.dart

Index: pkg/analyzer/test/src/summary/test_all.dart
diff --git a/pkg/analyzer/test/src/summary/test_all.dart b/pkg/analyzer/test/src/summary/test_all.dart
index fa620fefdc49191316da9b382ae1f138d02f450d..2f9202ba331b4563a7f1f90f6f3d63487ec19a77 100644
--- a/pkg/analyzer/test/src/summary/test_all.dart
+++ b/pkg/analyzer/test/src/summary/test_all.dart
@@ -11,6 +11,7 @@ import 'flat_buffers_test.dart' as flat_buffers_test;
 import 'in_summary_source_test.dart' as in_summary_source_test;
 import 'incremental_cache_test.dart' as incremental_cache_test;
 import 'index_unit_test.dart' as index_unit_test;
+import 'linker_test.dart' as linker_test;
 import 'name_filter_test.dart' as name_filter_test;
 import 'prelinker_test.dart' as prelinker_test;
 import 'resynthesize_ast_test.dart' as resynthesize_ast_test;
@@ -29,6 +30,7 @@ main() {
     in_summary_source_test.main();
     incremental_cache_test.main();
     index_unit_test.main();
+    linker_test.main();
     name_filter_test.main();
     prelinker_test.main();
     resynthesize_ast_test.main();